,An analytical model for predicting dryout point in bilaterally heated vertical narrow annuli

• 作 者: AYE Myint TIAN Wen-xi JIA Dou-nan LI Zhi-Hui LI Hao
• 机 构: State Key Laboratory of Multiphase Flow on Power Engineering,Department of Nuclear & Thermal Power E
• 出 处: 核技术（英文版）
• 发表日期: 2005年1期
• 关键词: Narrow annuli Bilaterally heating Dryout point Critical quality Annular flow

Based on the droplet-diffusion model by Kirillov and Smogalev (1969, 1972), a new analytical model of dryout point prediction in the steam-water flow for bilaterally and uniformly heated narrow annular gap was developed. Comparisons of the present model predictions with experimental results indicated that a good agreement in ac curacy for the experimental parametric range (pressure from 0.8 to 3.5 MPa, mass flux of 60.39 to 135.6 kg·m-2·s-1 and heat flux of 5 to 50 kW·m-2). Prediction of dryout point was experimentally investigated with deionized water upflowing through narrow annular channel with 1.0 mm and 1.5 mm gap heated by AC power supply.